Yeah like Luminaire said, you need some real education on the matter. You clearly don't know what you're talking about.
The US dollar has "no real backing". It's backing is the consensus that a dollar is a dollar. Can you measure that consensus, faith and trust in economic or mathematical terms? No, you can't. It's backed by something immeasurable, so essentially it's nothing. In the sense that currency value is determined by consensus, bitcoin obviously has that same backing, right? It also has the backing of new and revolutionary technology and the underlying block-chain network - a network of millions of computers around the world. That is real backing.
beyond that, you're just talking about bitcoin here as currency, and how it's not viable.
What about other crypto's that have different applications? How about power ledger, which will be a crypto tied into the smart energy grid used for buying, selling and exchanging renewable energy in the former of a digital coin? How about Ripple, which already has partnerships with major banks and credit card companies, that will be used to provide instant liquidity between financial firms. Meaning, transaction times that are nearly instant, and 0 transaction fees? How about ethereum, which is both a cryptocurrency, programing language, and decentralized data network all in one?
Different coins have different applications and use cases, not all of them are trying to be a new currency for daily transactions.
If you think fiat paper currency created out of thin air, controlled by the fed, that is expensive and slow to send and receive, is here to stay, you're either ignorant, stupid, or both.